The BNI has recommended that the Deputy Head of the Commercial Crimes Unit, DSP (Mrs.) Gifty Mawunyegah Tehoda, and the Head of the Narcotics Unit of the CID of the Ghana Police Service, DSP Kofi Adzei-Tuadzra, should be held responsible for their respective roles in the transformation of the cocaine exhibit which turned out to be sodium carbonate during a recent cocaine trial in Accra.